Lightweight, high-strength, thermal- and sound-insulating reed scraps/portland cement composite using extruded resin particles

IF 7.4 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Construction and Building Materials Pub Date : 2024-11-17 DOI:10.1016/j.conbuildmat.2024.139248

Shuanggang Yang, Hao Wu, Yingfeng Zuo, Xingong Li, Yiqiang Wu

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引用次数: 0

Abstract

The development of a lightweight composite made from reed scraps, Portland cement, and polystyrene particles can simultaneously address issues related to reed waste, environmental pollution, and carbon emissions produced by the construction industry. However, standard polystyrene particles have low bonding strength with Portland cement and reed scraps, giving the resulting composites inferior mechanical properties and thermal and acoustic insulation characteristics. To overcome these limitations, nano-silicon expanded resin particles (NSERP), composed of polyvinyl alcohol, polystyrene, nano-silicon, and various modifiers, were introduced to replace traditional polystyrene particles in the composite. These novel particles enhanced the interfacial bonding strength and improved the mechanical properties, as well as the thermal and acoustic insulation capabilities of the composites. This study investigated the effects of the water-cement ratio, reed scraps-to-cement ratio, and NSERP dosage on the composite's properties through single-factor experiments. The optimized composite had a density of 0.66 g/cm³ and a compressive strength of 2.5 MPa, and its sound absorption coefficient in the middle and high-frequency bands was 0.7, which was approximately 4.3 times higher than that of conventional silicate composites. Its thermal insulation performance surpassed that of standard composites. This lightweight, high-strength, thermally insulating, environmentally friendly, and energy-efficient multifunctional composite has potential applications in building energy conservation, traffic noise reduction, and new energy battery insulation.

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使用挤压树脂颗粒的轻质、高强度、隔热和隔音芦苇碎片/波特兰水泥复合材料

开发一种由芦苇下脚料、波特兰水泥和聚苯乙烯颗粒制成的轻质复合材料，可以同时解决与芦苇废料、环境污染和建筑业产生的碳排放有关的问题。然而，标准的聚苯乙烯颗粒与波特兰水泥和芦苇下脚料的粘合强度较低，导致复合材料的机械性能、隔热和隔音性能较差。为了克服这些局限性，我们引入了由聚乙烯醇、聚苯乙烯、纳米硅和各种改性剂组成的纳米硅发泡树脂颗粒（NSERP），以取代复合材料中的传统聚苯乙烯颗粒。这些新型颗粒增强了界面粘合强度，改善了复合材料的机械性能以及隔热和隔音能力。本研究通过单因素实验研究了水灰比、芦苇碎屑与水泥比以及 NSERP 用量对复合材料性能的影响。优化后的复合材料密度为 0.66 g/cm³，抗压强度为 2.5 MPa，其中高频段吸声系数为 0.7，是传统硅酸盐复合材料的约 4.3 倍。其隔热性能超过了标准复合材料。这种轻质、高强、隔热、环保、节能的多功能复合材料有望应用于建筑节能、交通降噪和新能源电池隔热等领域。

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来源期刊

Construction and Building Materials 工程技术-材料科学：综合

CiteScore

13.80

自引率

21.60%

发文量

3632

审稿时长

82 days

期刊介绍： Construction and Building Materials offers an international platform for sharing innovative and original research and development in the realm of construction and building materials, along with their practical applications in new projects and repair practices. The journal publishes a diverse array of pioneering research and application papers, detailing laboratory investigations and, to a limited extent, numerical analyses or reports on full-scale projects. Multi-part papers are discouraged. Additionally, Construction and Building Materials features comprehensive case studies and insightful review articles that contribute to new insights in the field. Our focus is on papers related to construction materials, excluding those on structural engineering, geotechnics, and unbound highway layers. Covered materials and technologies encompass cement, concrete reinforcement, bricks and mortars, additives, corrosion technology, ceramics, timber, steel, polymers, glass fibers, recycled materials, bamboo, rammed earth, non-conventional building materials, bituminous materials, and applications in railway materials.